3.4 DOHC Idles high 2000 to 2500 rpms

What is your question?

I have a 93 olds cutlass supreme 3.4 DOHC it sat thru winter and the battery died. Since getting running again it idles high and wont come down. I was told probably IAC valve and when I checked it with the key on the plunger popped off. So I got a new IAC and installed it. No change I then installed a new TPC no change. What is wrong with this thing???